| 000 | 00802 a2200241 4500 | ||
|---|---|---|---|
| 005 | 20250511135834.0 | ||
| 264 | 0 | _c19800423 | |
| 008 | 198004s 0 0 eng d | ||
| 022 | _a0007-1447 | ||
| 024 | 7 |
_a10.1136/bmj.2.6203.1507-b _2doi |
|
| 040 |
_aNLM _beng _cNLM |
||
| 100 | 1 | _aJones, R | |
| 245 | 0 | 0 |
_aThe case-control study and retrospective controls. _h[electronic resource] |
| 260 |
_bBritish medical journal _cDec 1979 |
||
| 300 |
_a1507-8 p. _bdigital |
||
| 500 | _aPublication Type: Letter | ||
| 650 | 0 | 4 | _aEpidemiologic Methods |
| 650 | 0 | 4 | _aHumans |
| 650 | 0 | 4 | _aResearch Design |
| 650 | 0 | 4 | _aRetrospective Studies |
| 773 | 0 |
_tBritish medical journal _gvol. 2 _gno. 6203 _gp. 1507-8 |
|
| 856 | 4 | 0 |
_uhttps://doi.org/10.1136/bmj.2.6203.1507-b _zAvailable from publisher's website |
| 999 |
_c547243 _d547243 |
||